CFLAGS += -g
CFLAGS += -O2

all: dep1
	@echo "Hi you are running all targets"
	@echo "CFLAGS are $(CFLAGS)"

.phony : dep1
dep1: dep2 dep3
	@echo "Hi I am dep1"

.phony : dep2
dep2:
	@echo "Hi I am dep2"

.phony : dep3
dep3:
	@echo "Hi I am dep3"

